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Title

Comparison of Carbohydrate and Lipid Oxidation During Different High-Intensity Interval Exercise in Patients with Chronic Heart Failure

Authors
Ribeiro, Paula Aver Bretanha
Normandin, Eve
Juneau, Martin
Nigam, Anil
Gayda, Mathieu
Published in American Journal of Physical Medicine and Rehabilitation. 2017, vol. 96, no. 1, p. 50-54
Abstract Substrate oxidation was compared during different high-intensity intermittent exercise (HIIE) protocols in patients with heart failure and reduced ejection fraction (HFREF). Eighteen males with HFREF (58.8 ± 9 years) were randomly assigned to 4 different HIIEs: 30 seconds (A and B) or 90 seconds (C and D) at 100% peak power output, with passive (A and C) or active recovery (50% of peak power output; B and D). Each HIIE protocol was separated by 1 week. Substrate oxidation (carbohydrate [CHO] and lipid: in g/min and in %) was calculated with gas exchange analysis. A 2-way analysis of variance and Bonferroni post hoc test were used (P ≤ 0.05) to compare CHO and lipid oxidation during the 4 HIIEs. Protocols with passive recovery (A and C) resulted in significantly lower quantitative CHO oxidation (g/min) (interaction, P < 0.001) compared to modes with active recovery (B and D). Quantitative lipid oxidation (g/min) was significantly lower in protocol C compared to the 3 other HIIE protocols (interaction, P < 0.001). In patients with HFREF, shorter HIIE bouts with passive recovery oxidize less CHO and more lipids (quantitatively) compared to the other HIIE protocols. This might be taken into account the exercise training prescription and might influence muscle metabolism adaptations.
Identifiers
PMID: 27175565
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Structures
Research groups Transplantation et hépatologie (905)
Dysfonctions cardio-pulmonaires et cérébrales (278)
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RIBEIRO, Paula Aver Bretanha et al. Comparison of Carbohydrate and Lipid Oxidation During Different High-Intensity Interval Exercise in Patients with Chronic Heart Failure. In: American Journal of Physical Medicine and Rehabilitation, 2017, vol. 96, n° 1, p. 50-54. https://archive-ouverte.unige.ch/unige:93775

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Deposited on : 2017-04-21

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